Mary-Kate and Ashley Olsen recently attended the wedding of their good friend Molly Fishkin and producer/director Asher Levin, documented by Vogue, and the twins got to design her wedding gown!

“They are very close friends of mine and have been for the last 15 years,” Molly told Vogue. “The minute I got engaged, they said they would love to design my wedding dress. I was thrilled—their taste is impeccable, and I really trust them. Their team was so incredible and patient with me. They were always so calming and made the process incredibly enjoyable. I will never forget what they did for me.”